Its not to use a different order to be showy (12)

I believe the answer is:

ostentatious

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'to be showy' is the definition.
('ostentatious' can be similar in meaning to 'showy')

'its not to use a different' is the wordplay.
'different' indicates anagramming the letters.
'its'+'not'+'to'+'use'+'a'='itsnottousea'
'itsnottousea' is an anagram of 'OSTENTATIOUS'.

'order' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.

Can you help me to learn more?

(Other definitions for ostentatious that I've seen before include "Flamboyant" , "Given to pretentious display" , "over the top" , "Showy and vulgar" , "Pretentious, showy" .)

I've seen this clue in The Irish News.

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